just tried to renew my McAfee security and found that it is not compatible with OS 10.5. I have just ordered the Snow Leopard upgrade from the app store. Does anyone know if this will fix things for me, or should I then upgrade to Lion.

I just tried to renew my McAfee security and found that it is not commpatible with my OS X 10.5. I have ordered the upgrade for Snow Leopard and it will be shipped to me. Does anyone know if this will fix things sufficiently for me to install the security? I am totally bummed that I'm without security for a couple of days until the software arrives. I guess I've just been asleep at the wheel here.